It has been observed in single-crystal growth batch experiments where the solution is stagnant that different materials and different crystals crystallize with varying growth rate profiles. Growth rate dispersion has been shown to be a function of the supersaturation conditions present during both nucleation and growth. The purpose of this paper is to interpret the growth rate profiles of sodium nitrate, potash alum, and potassium sulfate nuclei through the development of a new growth rate model. The new growth rate model uses both strain and dislocations to account for experimentally observed behavior in growth rates and growth rate dispersion.